User guide

Return Fan Module Feature String Nomenclature
MODULE ID
POSITION
CONNECTION
BLANK
BLANK
BLWR QUANTITY
BLWR TYPE
BLWR HP
BLOWER
BLWR ISOLATION
BLANK
BLANK
BLANK
CONNECTION
MODULE ACCESSORY
ACCESS
TYPE
RFA
-
000
-
0
-
0
0
-
C
P
H
D
A
-
0
0
0
A
R
-
B
-
0
35
Return Fan Module Feature Description
RETURN FAN MODULE
Module ID
RFA = Return Fan Module
Position
### = Level and Position of Module in Air Handling
Unit
Connections
0 = No End Wall
A = Air Entering End Wall
Blank
0 = Standard
Blank
0 = Standard
BLOWERS AND MOTORS
Quantity
0 = 1 Blower with ODP Motor
A = 2 Blowers with ODP Motors
B = 3 Blowers with ODP Motors
C = 4 Blowers with ODP Motors
D = 1 Blower with TEFC Motor
E = 2 Blowers with TEFC Motors
F = 3 Blowers with TEFC Motors
G = 4 Blowers with TEFC Motors
Blower Type
0 = Standard Efficiency
A = Premium Efficiency
B = Premium Eff with 1 VFD
C = Premium Eff with 1 VFD and Bypass
D = Premium Eff with Field Installed VFD
E = Premium Eff with 1 VFD Shipped Loose
F = Premium Eff with 2 VFDs
G = Premium Eff with 2 VFDs and Bypass
H = Premium Eff with 2 Field Installed VFDs
J = Premium Eff with 2 VFDs Shipped Loose
K = Premium Eff with 3 VFDs
L = Premium Eff with 3 VFDs and Bypass
M = Premium Eff with 3 Field Installed VFDs
N = Premium Eff with 3 VFDs Shipped Loose
P = Premium Eff with 4 VFDs
Q = Premium Eff with 4 VFDs and Bypass
R = Premium Eff with 4 Field Installed VFDs
S = Premium Eff with 4 VFDs Shipped Loose
Blower HP
0 = 1 hp, 1170 rpm
A = 2 hp, 1170 rpm
B = 3 hp, 1170 rpm
C = 5 hp, 1170 rpm
D = 7.5 hp, 1170 rpm
E = 10 hp, 1170 rpm
F = 15 hp, 1170 rpm
G = 20 hp, 1170 rpm
H = 25 hp, 1170 rpm
J = 30 hp, 1170 rpm
K = 40 hp, 1170 rpm
L = 50 hp, 1170 rpm
M = 1 hp, 1760 rpm
N = 2 hp, 1760 rpm
P = 3 hp, 1760 rpm
Q = 5 hp, 1760 rpm
R = 7.5 hp, 1760 rpm
S = 10 hp, 1760 rpm
T = 15 hp, 1760 rpm
U = 20 hp, 1760 rpm
V = 25 hp, 1760 rpm
W= 30 hp, 1760 rpm
Y = 40 hp, 1760 rpm
Z = 50 hp, 1760 rpm
1 = 60 hp, 1760 rpm
Blower
0 = 24” Diameter
A = 27” Diameter
B = 30” Diameter
C = 33” Diameter
D = 36.5” Diameter
E = 42.5” Diameter
F = 36” Diameter, 3 Blade, 6W Prop
G = 42” Diameter, 4 Blade, 6W Prop
H = 42” Diameter, 6 Blade, 6W Prop
I = 48” Diameter, 6 Blade, 6W Prop
Blower Isolation
A = Springs (Unhoused 1” Deflection)
B = Springs (Unhoused 2” Deflection)
C = Springs (Seismic 1” Deflection)
D = Springs (Seismic 2” Deflection)
E = Option 0 + Backdraft Dampers
F = Option A + Backdraft Dampers
G = Option B + Backdraft Dampers
H = Option C + Backdraft Dampers